org.codehaus.groovy.ast.expr
[Java] Class ElvisOperatorExpression

java.lang.Object
  org.codehaus.groovy.ast.ASTNode
      org.codehaus.groovy.ast.AnnotatedNode
          org.codehaus.groovy.ast.expr.Expression
              org.codehaus.groovy.ast.expr.TernaryExpression
                  org.codehaus.groovy.ast.expr.ElvisOperatorExpression

public class ElvisOperatorExpression
extends TernaryExpression

Represents a short ternary expression x ?: y, which is equal to

 def truePart = x
 def booleanPart = truePart as boolean
 booleanPart? truePart : y
 

 class Foo { 
   def index=0 
   def getX(){ index++; return index }
 }
 def foo = new Foo()
 def result = foo.x ?: "false case" 
 assert foo.index == 1
 assert result == 1 
 

Authors:

Jochen Theodorou

Since:

1.5

ElvisOperatorExpression

public ElvisOperatorExpression(Expression base, Expression falseExpression)

transformExpression

public Expression transformExpression(ExpressionTransformer transformer)

visit

public void visit(GroovyCodeVisitor visitor)

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